Perrie Ilercil, PE

Senior Transportation Engineer

Perrie Ilercil has been involved in the transportation engineering field for over 27 years, with the last seven years focused on traffic engineering and transportation planning in California. She is a Registered Professional Engineer (Civil) in the State of Arizona. Her experience in the planning and analysis fields includes preparation of numerous traffic impact studies, traffic control assessments, trip generation studies, traffic forecasting and operations analysis, sight distance evaluation, site access and circulation review, collision history analysis, traffic calming, and parking demand studies.

Perrie is a member of multiple associations for transportation professionals. She began her career in the transportation design field at notable engineering services firms, including positions as a project traffic engineer and a project design engineer for numerous freeway projects in the Phoenix-metro area. Perrie obtained a Bachelor of Science degree in civil engineering from Arizona State University where she was a member of the National Civil Engineering Honor Society.

Areas of Expertise

Transportation Planning
Traffic Engineering


Professional Engineer (Civil), No. 25976, State of Arizona


B.S. Civil Engineering, Arizona State University

Professional Affiliations

Institute of Transportation Engineers (ITE)
Orange County Traffic Engineering Council (OCTEC)
American Society of Civil Engineers (ASCE)
Women’s Transportation Seminar (WTS)